Gas and water regulating valve for water-heaters.



No. 748.846. PATENTED NOV. 10, 1903.

. J. W. & G. H. EWART.

GAS AND WATER REGULATING VALVE FOR WATER HEATERS.

APPLICATION FILED 00116, 1902.

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J. W. & G. H. EWART. I GAS AND WATER REGULATING VALVE FOR WATER HEATERS.

AlPLiGATION FILED 00116; 1902.

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UNITED STATES:

JOHN WILLIAM EWART,

Patented November 10, 1903.

PATENT OFFICE.

OF WENDOVER, AND GEORGE HERBERT EYVART,

OF LONDON, ENGLAND.

SPECIFICATION formingpart of Letters Patent-No. 743,846, dated November10, 1903. Application died October 16, 1902. Serial No. 127,515. (Nomodel.)

To all whom it may concern:-

Be it known that we, JOHN WILLIAM EWART, residing at- Siirrey House,Ghiltern road, Wendover, in the county ofBucks, and GEORGE HERBERTEWART, residing at 28 Lewisham road, Highgate road, London, England,subjects of the King of Great Britain, have invented new and usefulImprovements in Gas and \Vater Regulating Valves for ater-Heaters, ofwhich the following is a specification.

This invention relates to improvements in gas and water regulatingvalves for water heaters.

According to the invention we construct our improved valve of twochambers or boxes of any suitable shape in cross-section, the said twoboxes being secured together externally in any convenient manner-such,for example, as by being cast in one piece and being advantageouslyarranged side by side, although they may be arranged vertically oneabove the other, if preferred. -Each of the chambers is provided withtwo tubes serving as inlet and outlet for the gas'and water,respectively. Through the chambers there passes a spindle or axle, eachchamber where it is pierced by the said spindle being provided with astu fling-box for preventing leakage. The spindle carries an arm or armsinside each chamber, the free ends of the said arms having mounted uponthem the gas and water valves. The water-valve comprises a disk or thelike of metal arranged so as to cover the water-inlet. The gas-valveoomprises a solid block of metal having fixed to its under side a sheetof rubber to enable it to make a good seat upon the inlet-tubes.

In the accompanying drawings, Figure 1 is a horizontal section of a gasand water regulating valve made according to the inventiou. Fig. 2 isasecti'onal elevation thereof. Figs. 8 and t are views, similar to Figs.1 and 2, ofaslightly-modified construction of valve; and Fig. 5 isapartial sectional view of a slight modification of the form of the watercontrolling valve shown in Figs. 3 and 4.

Referring first to the arrangement shown in Figs. 1 and 2, a is thewater-chamber, and b the gas-chamber, these two chambers beingexternally joined together. 0 is the waterinlet pipe, and d thewater-outlet pipe, in connection with the chamber a, and e is thegas-inlet, andf the gas-outlet, pipe in connection with the chamber 17.g is the spindle or chambers, which are provided with stuffingboxes 7;z' to pack the spindle g and prevent leakage from the chambers. j j arearms which are secured upon the spindle g inside the chamber a and whichcarry the disk Z,

forming the water-valve, adapted toclose the water-inlet c, as clearlyshown in Fig. 2. The gas-valve m comprises a solid block fitted at itsunder side with the rubber packing hi, this valve being provided with aneye m by means of which it is suspended upon the end of the arm k.

In the modified construction of valve shown in Figs. 3 and 4 the spindle9 passes through expansions or enlargements h h of the chambers a and b,and the valve Z instead of being in the form of a disk is made in theshape of a solid block hollowed out at its under side, as shown at Z,and is suspended by the eye Z to the free end of the arm j. n is acylinder which is fitted inside the chamber a and forms a continuationof the water-inlet o and in which the valve V is mounted so as to movefreely vertically therein. 0 0 are holes with which the said internaltube is providedfor enabling water to pass from the cylinder or sleeveat" to the chamber a, and p p are slits for receiving the end of thearlnj. With this construction of valve when the water enters theinlet-pipe c it raises the valve P or its seat upon the inlet-pipe a,through which the 0 water enters the chamber a, and. passes out at theoutlet 61. As the valve Z rises it rocks the spindle g andsimultaneously raises the gas-valve m, so that gas is permitted to enterthe inlet 6 into the chamber 1), whence it es- 5 capes through theoutlet f. Should the flow of water he stopped for any reason, the valvesautomatically drop down under the action of gravity, whereby the valve mcuts 0d the supply of the gas to the heater, in connection withtoo whichthe'device is fitted. When it is de sired to use the chambers in avertical position, a spring may be added to insure the closing of thevalves.

In using the device shown in Figs. 3 and 4 with what is known as apressure waterheater the water-valve may be formed with a plate or diskZ at its upper extremity, the loop or eye Z through which thesuspendingarm passes, being arranged between the solid block and thisplate, as shown in Fig. 5. The action of stopping the flow of water froma pressure-heater causes back pressure to extend through the surfacepipes and fittings, which back pressure will in this case act directlyupon the plate or disk Z and thus aid in shutting off the valves.

Having now particularly described and ascertained the nature of oursaidinvention and in what manner the same is to be performed, we declarethat What we claim is- 1. In a gas and water regulating valve forwater-heaters the combination with a pair of chambers, each providedwith separate inlets and outlets, of a rocking spindle having a portionin each of said chambers, stuffing-boxes engaging the portions of saidspindle passing through the walls of said chambers, an arm on saidspindle within each chamber; a vertically-disposed sleeve in one of saidchambers rigidly secured thereto and communicating with the inletthereof, said sleeve being open at its upper end and provided withdischarge-apertures in its wallsbetween its ends, a block movable freelyin said sleeve for closing said inlet and discharge apertures, saidblock being connected with one of said spindle-arms, and a valve in theother chamber connected with the other spindle-arm and adapted to engagethe inlet to said chamber, substantially as described.

2. In a gas and water regulating valve for water-heaters the combinationwith a pair of chambers rigidly connected together, of a spindle havinga portion within each of said chambers, stuffing-boxes engaging theportions of said spindle passing through the walls of said chambers,adjustable pivot-pins engaging the ends of said spindle, one of saidpins being located in a Wall of each chamber a valve in each chamber,and an arm in each chamber connected to said spindle and to one of saidvalves, substantially as described.

JOHN WILLIAM EWART. GEORGE HERBERT EWART. Witnesses:

C. G. REDFERN, A. ALBUTT.

